JPS59107379A - Liquid crystal display unit - Google Patents

Liquid crystal display unit

Info

Publication number
JPS59107379A
JPS59107379A JP57216878A JP21687882A JPS59107379A JP S59107379 A JPS59107379 A JP S59107379A JP 57216878 A JP57216878 A JP 57216878A JP 21687882 A JP21687882 A JP 21687882A JP S59107379 A JPS59107379 A JP S59107379A
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal display
display device
reflector
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP57216878A
Other languages
Japanese (ja)
Inventor
猪越 重吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP57216878A priority Critical patent/JPS59107379A/en
Publication of JPS59107379A publication Critical patent/JPS59107379A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 しり?、明の技術外IJjif ) この発明は液晶表示装置にかかり /1.′トに液晶表
示器の背面ないし側面に照明部を設けた液晶表示・メ・
置の照明部における発熱のある光源の冷却4W造に関す
る。
[Detailed description of the invention] Shiri? This invention relates to a liquid crystal display device. /1. ``Liquid crystal displays with lighting sections on the back or sides of the LCD display
This invention relates to a 4W cooling system for a light source that generates heat in a lighting section of a machine.

〔発明の技術的−1,冒121〕 照明部を有する液晶表示装置は一般に第1図およびp(
< 2図に示す構造になっている。第2図d1第1図の
側面図を示している。図において、(1)は液晶表示器
でそのサイド背面に小型白熱1111球(2)。
[Technical aspect of the invention-1, No. 121] A liquid crystal display device having an illumination section is generally shown in FIGS.
< The structure is shown in Figure 2. Figure 2 d1 shows a side view of Figure 1; In the figure, (1) is a liquid crystal display with a small incandescent 1111 bulb (2) on the back side.

(2)・・・を光源に備え、前面はこの光源からの光を
液晶表示器(1)に均一に入射させるために導光f(3
)を介在させている。寸だ、光源からの光はイf効に液
晶表示器の照明に使われるように、光臨の白熱電球は導
光板(3)に面する仰1面を除き反射板(4)で囲繞さ
せている。そして、上記は基板(5)土に液晶保持金具
(6)等を用いてJ1y治され、さらに仁オ]、らがケ
ース(7)に組込まれて筐体(8)K装着さ力5ること
か一般的である。なお、第2図に示さ負、る(9)は液
晶表示器の′11L極への配線体である。
(2)... is provided as a light source, and the front surface is equipped with a light guide f(3) in order to make the light from this light source uniformly enter the liquid crystal display (1).
) is interposed. In order to ensure that the light from the light source is effectively used to illuminate the liquid crystal display, the incandescent light bulb is surrounded by a reflector (4) except for the first side facing the light guide plate (3). There is. Then, the above is fixed on the board (5) using the liquid crystal holding metal fittings (6), etc., and then the parts are assembled into the case (7) and the housing (8) is attached with force. It's rather common. Note that the negative sign (9) shown in FIG. 2 is a wiring body connected to the '11L pole of the liquid crystal display.

〔背景技術の問題点〕[Problems with background technology]

液晶表示は液晶の分極現象を利用して表示されるが、あ
る一定温度以上になると分極されなくなり表示できなく
なる。この温度は液晶の錘類によっても異なるが、約6
0〜80℃以上である。表示できる範囲を動作温度範囲
と称するが、照明装置を備えるとき、液晶温度は室温の
影響に加えて光源からの熱伝導、ふく射による影響を受
け、結果として・1lIJ作【耳部な室温の範囲を狭め
ることになる。
Liquid crystal displays utilize the polarization phenomenon of liquid crystal to display images, but when the temperature exceeds a certain level, polarization ceases and display becomes impossible. This temperature varies depending on the weight of the liquid crystal, but is approximately 6
The temperature is 0 to 80°C or higher. The range that can be displayed is called the operating temperature range, but when equipped with a lighting device, the liquid crystal temperature is affected not only by the room temperature but also by heat conduction and radiation from the light source. This will narrow the

光(1ル1、の影響(・でよる液晶部の温度上昇は4.
ljl造によっても’、5tなるが、50℃以上に達す
ることもある。この時液晶部の動作1.+a度範囲が7
0℃であれば、室温が20’G以上では表示でき々いと
いうCri大々間閏がある。このような液晶表示器の温
度上昇は液晶表示装岡全体の第1゛6造に問題があるた
めである。
The temperature increase in the liquid crystal section due to the influence of light (1.1) is 4.
Even with ljl construction, the temperature can reach 5t, but it can reach over 50℃. At this time, the operation of the liquid crystal section 1. +a degree range is 7
If the temperature is 0°C, there is a large gap in Cri where the display cannot be displayed if the room temperature is 20'G or higher. This rise in temperature of the liquid crystal display is due to a problem with the first and sixth structures of the entire liquid crystal display panel.

液晶表示器の71,5度上昇を防ぐためには光源より液
晶表示器に至る熱を既ffj’i L 、その熱を熱容
j紀の大きい部材へ放出させるか、光源より液晶表示器
が受けた熱を液晶表示器の表面から熱′88トの大きい
部拐へ放出させることが必−要である。(7かし、第1
図および第2図に示すように、液晶表示器は一般に基板
(プリント配線基板)上に照明装置す1とともに一体的
にホ(1立てられ、それを筐体、ケース等に組込んでい
る。このような構造の時、液晶表示器に全る熱を部所す
る反射板は一般に比較的小型で熱着J’jFの小さいも
のになり、液晶表示器表面からの放熱は液晶がガラスで
あるために、液晶表示11号自体を強くケースまたは筐
体に密着させることができず効果が少々い欠点がある。
In order to prevent the liquid crystal display from rising by 71.5 degrees, the heat reaching the liquid crystal display from the light source must be released to a member with a large heat capacity, or the liquid crystal display must absorb the heat from the light source. It is necessary to radiate the generated heat from the surface of the liquid crystal display to a large area of heat. (7th grade, 1st
As shown in FIG. 2 and FIG. 2, a liquid crystal display is generally mounted integrally with a lighting device 1 on a substrate (printed wiring board), and is assembled into a housing, case, or the like. In such a structure, the reflector that directs all the heat to the liquid crystal display is generally relatively small and has a small thermal adhesion J'jF, and the heat dissipated from the surface of the liquid crystal display is caused by the liquid crystal being made of glass. Therefore, there is a drawback that the liquid crystal display 11 itself cannot be firmly attached to the case or housing, and the effect is somewhat poor.

この対策として第3図に示すように反射板(4)K孔(
9) 、 (9)・・・を設は光源周囲の過熱し7た雰
囲気をその対流によって放出させる手段がある。しかし
、この方法は光が外部へ洩れて照明効果′f:低減させ
る欠点がある。
As a countermeasure to this problem, as shown in Fig. 3, the K hole (
9), (9)... There is a means for discharging the overheated atmosphere around the light source by its convection. However, this method has the disadvantage that light leaks to the outside, reducing the illumination effect.

〔発明の目的〕[Purpose of the invention]

この発明は照明部を有する液晶表示装置における照明部
の発熱を有効に外部に放出させることによって、上記従
来の液晶表示装置における問題点の改良をはかるもので
ある。
The present invention aims to improve the problems in the conventional liquid crystal display device by effectively discharging heat generated by the illumination section to the outside in a liquid crystal display device having the illumination section.

〔発明の柳、要〕[Yanagi of Invention, Kaname]

この発明にかかる液晶表示装置1 kl 、 #晶表示
器と、その背面に設けられ小型白熱電球と導光板とから
々る照明部と、前記白熱電球の光を導光板に入射させる
ための反射板とを備え、反射板の外側を被包する筐体に
装着される707品表示装置kにおいて、筐体が反射板
の5倍以上の熱容量を有するとともに両者の間隔が11
1IIII以内であることを特徴とする。
A liquid crystal display device according to the present invention 1kl, #crystal display, an illumination section provided on the back thereof and consisting of a small incandescent light bulb and a light guide plate, and a reflector for allowing the light of the incandescent light bulb to enter the light guide plate. In the 707-item display device k, which is attached to a casing that covers the outside of the reflector, the casing has a heat capacity that is 5 times or more that of the reflector, and the distance between the two is 11
1III or less.

〔発明の実施例〕[Embodiments of the invention]

以下にこの@川を1実施例につき図面を参照して詳細に
説明する。
This @river will be explained in detail below with reference to the drawings for one embodiment.

第4図ないし第6図はいずゎも夫々が1実施例の液晶表
示装置を示し、これらはいずれも筐体(才たはケース)
の熱容量が実験的にきめられた反射板の熱容量の5倍以
上に設けられている。この熱各#けきわめてβlJ密に
その定義に従ガうものでなく、一般にいずれも金属の場
合に各々の体枯によってきめてよい。
Figures 4 to 6 each show one embodiment of the liquid crystal display device, and each of these is a housing (case).
The heat capacity of the reflector is five times or more that of the reflector, which has been experimentally determined. This heat does not strictly follow the definition of βlJ, but in general, in the case of metals, it can be determined based on the deterioration of each body.

第4図に示す第1の実施例は、基板(51、Rtt明部
り、液晶表示器(1)が一体化されており、液晶表示器
(1)の温度上昇に最も影響をもつ反射板(4)の熱を
こtLよりもによるかに熱容量の大きい筐体(またはケ
ース)(7)に放出させるために、双方の間隔を1n以
内に近接させている。また、筐体と液晶部分との分離が
賓易に々っでいる。
In the first embodiment shown in FIG. 4, the substrate (51, Rtt bright area, and liquid crystal display (1) are integrated, and the reflection plate that has the most influence on the temperature rise of the liquid crystal display (1) In order to release the heat from (4) to the housing (or case) (7), which has a much larger heat capacity than tL, the distance between the two is set close to each other within 1n. The separation between the two is becoming increasingly common.

次の第5図に示す第2の実施例は、反射板(4)に予め
板ばね圓を密着させておき、これを通して伝熱させる構
造になっている。これも斜上の実施例と同様に筐体と液
晶部分との分割が谷易な構造になっている。
The second embodiment shown in FIG. 5 has a structure in which a leaf spring circle is brought into close contact with the reflection plate (4) in advance, and heat is transferred through this. This also has a structure in which the casing and the liquid crystal portion are easily divided, similar to the diagonal embodiment.

次の第6図に示す第3の実Mii例は、反射板(4)に
予め放熱フィンl :t)を取着しておき、見かけ上の
反射板の表面積を拡大しておき、この面を筐体(または
ケース)に間隔が1ml以下斤らL2め−C近接させ、
効果的に執を放出源せZ)ものである。
In the third actual Mii example shown in FIG. Close to the housing (or case) with an interval of 1 ml or less from L2 to C,
It is an effective source of energy release.

〔発明の効果〕〔Effect of the invention〕

この発明によると、従来のf1′!造Vこ比し液晶表示
器の昇温を約1/2 VC低減させることができる。す
なわち、表示装置全体の構造により尭“T晶の絶対値は
嵌なるが、例えば、ツ1ル1ジIK示すような構造で必
% 7.、明るさを得るために光dgjのイイ報J1や
数量を決め、このときの昇温か50℃となる場合、この
発明の414造では昇温を20〜25℃に抑えることが
できた。
According to this invention, the conventional f1′! The temperature rise of the liquid crystal display device can be reduced by about 1/2 VC compared to the built-in V. In other words, the absolute value of the "T" crystal will fit depending on the structure of the entire display device, but for example, in a structure that shows IK, it is necessary to use the optical dgj's good information J1 in order to obtain brightness. In the case where the temperature increase at this time is 50°C, the temperature rise can be suppressed to 20 to 25°C in the 414 structure of this invention.

さらに、この発明は実施が簡Jf1.で原価に達成でき
る第1j点もある。
Furthermore, the invention is easy to implement. There is also a point 1j that can be achieved at cost.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来のめi晶表示装↑;1゛、の断面図、第2
図は第1図の側面121 s 第3図は照明部の一部の
斜視図、第4図、袷5図および第6図はいずれも夫々か
実施例Vt二かかり、各一部を示すいずれも断匍図であ
る。 ■     液晶表示器 2     14(明部の光源 3      (Iij明部の導光板 4     反射板 7      筐体(またはケース) 11      照明部 12      板ばね 1;3     放熱フィン 代理人 弁理士 井 上 −男 第  I  N 第  2 1 第3図 第4図 第 5 図 第  6  図
Figure 1 is a cross-sectional view of a conventional crystal display device ↑;1゛;
The figure is a side view 121s of FIG. 1. FIG. 3 is a perspective view of a part of the illumination part, and FIG. It is also a cross-sectional view. ■ Liquid crystal display 2 14 (Light source in bright area 3 (Iij Light guide plate in bright area 4 Reflector plate 7 Housing (or case) 11 Lighting part 12 Leaf spring 1; 3 Heat dissipation fin agent Patent attorney Inoue - Male No. I N 2 1 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

【特許請求の範囲】[Claims] 11′l晶表示器と、その背面に設けら力る小型白熱電
球と導光AJVとからなる照明部と、前君e白熱軍球の
)tを治光イフlに入射させる1r、めの反射板とを備
え、ノダ射板の外側を被包する筐体に装着される液晶表
示装置において、筐体が反射板の5倍以上の熱容I(ト
を有するとともに両者の間隔が1n以内であることをI
J¥j8!/とする液晶表示装置。
11'Illumination section consisting of a crystal display, a small incandescent light bulb and a light guide AJV installed on the back side, and 1r, which makes the incandescent ball) t enter the light control unit. In a liquid crystal display device that is equipped with a casing that includes a reflector and covers the outside of the projection plate, the casing has a heat capacity I (I) that is 5 times or more that of the reflector, and the distance between the two is within 1n. I believe that
J¥j8! / liquid crystal display device.
JP57216878A 1982-12-13 1982-12-13 Liquid crystal display unit Pending JPS59107379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57216878A JPS59107379A (en) 1982-12-13 1982-12-13 Liquid crystal display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57216878A JPS59107379A (en) 1982-12-13 1982-12-13 Liquid crystal display unit

Publications (1)

Publication Number Publication Date
JPS59107379A true JPS59107379A (en) 1984-06-21

Family

ID=16695324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57216878A Pending JPS59107379A (en) 1982-12-13 1982-12-13 Liquid crystal display unit

Country Status (1)

Country Link
JP (1) JPS59107379A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313202A (en) * 1986-07-03 1988-01-20 キヤノン株式会社 Light source unit
JPH0159284U (en) * 1987-10-09 1989-04-13
JPH0337420U (en) * 1989-08-21 1991-04-11
US8854164B2 (en) 2006-11-27 2014-10-07 Robert Bosch Gmbh Pressure-regulating valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6313202A (en) * 1986-07-03 1988-01-20 キヤノン株式会社 Light source unit
JPH0159284U (en) * 1987-10-09 1989-04-13
JPH0337420U (en) * 1989-08-21 1991-04-11
US8854164B2 (en) 2006-11-27 2014-10-07 Robert Bosch Gmbh Pressure-regulating valve

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